Cannot delete or update a parent row ConstraintViolationException

Question

I have 2 object entities (User and Phone) and they are supposed to have many-to-many relations.

User.java

//all columns

@ManyToMany(ca         


        

Answer 1

Make the following change.

//User class
@ManyToMany(cascade = {CascadeType.MERGE,CascadeType.REMOVE}, fetch = FetchType.EAGER)
...
private List phones;